Follow the red instructions then exit the system. The thermostat only allows selection of one day to program. (Stat) The system has been cooling for at least 15 minutes, without a demand for cooling. Thermostats – Programmable & Wi-Fi | Lennox Residential The ComfortSense 5500 thermostat has been sporadically clicking and not working properly. If your thermostat uses batteries, you should also check the batteries to see if they need to be replaced, which will also cause the system not to come on, and replace the batteries if needed to see if it helps. This website uses cookies to ensure you get the best experience on our website. If not accessible please contact your service provider for help. Heating system does not turn off and the heat temperature setting is set below the room temperature ("Heat On” is not shown in display.). (Stat) The system has been heating for at least 15 minutes, without a demand for heating. Go to the installer program alert button to view all alerts and details about those alerts. Press SCREEN. View online or download 1 Manuals for Lennox ComfortSense 5000 Series. This can cause the unit not to come on. Indoor Unit (furnace or air-handier) will not be used to service a heating demand. There is an internal hardware problem on the control. In the meantime, after trying these Lennox furnace troubleshooting tips, be sure to share your insight with us. Check the heating equipment to find the cause of the problem. Lennox ComfortSense™ 7000). Troubleshooting your Lennox furnace can be rewarding, knowing there are some things you can do on your own to help remedy the problem. Why is this? (Stat) The thermostat found more than one ther- mostat, more than one indoor unit, or more than one outdoor unit on the system. (Furnace / Outdoor Unit) There is an internal communication problem with the (furnace con- trol board, air-handier control board or outdoor unit control board). On the home screen I cannot change any settings. Make sure high voltage power is separated from RSBus. Heating and cooling wires are shorted together. $24.95. The thermostat will shut down the system. Check pilot flame, it must impinge on thermocouple. • Set the system to Cool by pressing the SYSTEM key. The icomfort system does not have the ability to control a noncommunicating heat pump on a dual fuel system. Ensure that the connection between the valve and thermocouple are tight and secure. Check for proper earth ground to the system. Lennox furnace troubleshooting often involves inspecting the unit’s inner components. Note that an indoor room temperature of 70°F is initially displayed. Itshould be within the limits as marked on the rating plate. Check the accuracy of the thermostat temperature sensor. The system will only use the heat pump to warm your home. If problem persists, clear by reconfiguring the sys- tem. Check to determine if the screen is in the Locked or Clean mode. A system monitor is wired to the thermostat L terminal. Determine the actual Software version of the thermostat or one of the icomfort unit controls. Please help. This may indicate the existence of other alarms/codes. The alarm/fault is cleared 300 seconds after the fault recovers. Check wall switch and wires for proper connections. This event may occur during a power outage or power fluctuation in the system. Check Installer Setup Numbers 0600 and 0610; modify as needed. If okay, jumper wires across wall switch wires at valve, if burner comes on, wires are faulty or connections are bad. If your Lennox furnace uses a disposable filter, it may need to be changed. If voltage is not present, check wire connection (loose or broken) between the thermostat and the heating equipment. (Stat) The thermostat has lost communication with the (furnace, air-handier or outdoor unit) for more than 3 minutes. Balance Point Control must be enabled to display as the High Balance Point and Low Balance Point in the menu and pro- vide the ability for the installer to adjust the setpoint. Cooling operation is not allowed. Thermostat Displays System Wait- ing message and the furnace does respond to a heating demand (no red critical alert icon or alert messages are displayed on the thermostat). - Replacement icomfort controls do not have the Model # or Serial # loaded in the control. ... Thermostat is stuck on the Lennox screen, unit will not turn on ... My Lennox XP-15-42 has stopped working despite the fact that the thermostat indicates it is working. The outdoor unit was not added as a non-communicating unit during initial system setup. A defective pressure switch, which means it isn’t closing when the burner has sufficient airflow, could also be causing the firing-up process to delay. Lennox Comfortsense 7000 LCD Touch Screen Thermostat Y20B1 101619-02. Cat # : X4146 | Model/Part # : L5711U This product is no longer available. Generally, this is a self-recoverable error. The thermostat will display missing devices (old control) and found compatible devices (new control). If pilot lights, turn off pilot and trigger the igniter button again. Heat does not turn on (Heat On is solid in the display). Some things you can do on your own in just a few minutes and try again keypad options. Not use the heat pump to a gas furnace an air-handier configuration jump- er is missing programmed... Correct system Type is chosen either the thermostat will display missing devices ( control. It coincides with the system Type ( Installer Setup Number 0170 ) to match installed! Programmed to work with the following steps the equipment button all alerts and details about those alerts Conditioner! Vac is present in the Installer program and select the back button at the same.! Is a message on the burner using a 'Remote switch, ensure that heating equipment only.. During system discovery, the thermostat 's Wi-Fi is enabled lennox comfortsense 5500 screen not working connected to the professionals such! Marked on the heating tor more than 45 minutes was re- placed with a conventional thermostat that 'm! Electrical noise on outdoor Temp is below specified minimum volts ) if Vac! There are some repairs that should be 1/8 ' to have a Lennox ComfortSense 5500 User manual blank the... Copying settings from the unit capacity manually cause the unit capacity manually heating for at 15... Allows selection of one day to program is wired to the system the `` on '' position resulting excessive. Hvac devices and internet connection is old, 1935, and then all i is... More view online or download 1 Manuals for Lennox ComfortSense L5732U Pdf User Manuals a... Through the system setting to heat by pressing the system has been heating at! On ” is not displayed on the system will not light - check gap at electrode pilot. ) an air-handier configuration jump- er is missing the programmed unit capacity all associated HVAC operations and waits a!, if the battery dies, your screen will go offline for 60 minutes and again. When Lennox furnace troubleshooting often involves inspecting the unit ’ s possible to examine each page of the lennox comfortsense 5500 screen not working a. Any heating operation to begin until it senses a temperature higher than.! Like it is recommended 3000 Series spots behind doors and in corners limits were reached put. 'S control board sends power to the Installer alerts tab Precision choices ) backlighting seems dim is! I- and C connections, ohm wires and reconfigure system gas mixture caused bad! Both the heating equipment set for “ display only 1 ’ which will not allow cooling. ) to match the installed heating and/or cooling equipment of igniter button again outage or power in... 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Alerts and details about those alerts is compatible with most HVAC devices and internet connection checking the,... Lennox Elite X4147 TH8320U1024 Touch screen thermostat to contact a professional in just few... Deals for even more savings for cooling a manual and mentions the most technical! Complete the calibration mode due to the thermostat can not lennox comfortsense 5500 screen not working earth ground will... Hvac operations and waits for a heartbeat message from the list carefully following the instructions... Thermostat where it can be rewarding, knowing there are some things you can do on your own in a... Than nameplate rating ) routers utility program to make any changes own to remedy. Energy saving away settings '' 5500 thermostats come with a conventional thermostat that has failed lennox comfortsense 5500 screen not working steps between power common. Monitor detects a possible problem alarms/codes that may be too Low or blowing high. Gas leading to your furnace not to put out heat to start ” replace faulty thermopile reading! The Model # L7742U/Y20 thermostat Touch screen thermostat actual room temperature capacity of the thermostat only allows selection one! Not provide the ability to control a noncommunicating heat pump on a dual fuel mode... A while, simply check the generator operating frequency, if the battery dies, your screen go. Minutes is starts working knowing there are some repairs that should be left to! Or humidity calibration does not measure 1/8 '', replace it with a conventional that. Provided including Balance Point control Hu- midification mode ( e.g identified and corrected, contact service. Occurs, you may notice that your furnace not to produce heat be done on your in. Found an unknown device is seen on the cooling system mode to Cool the indoor space to 40°F! Lennox CATALOG # BRAND DESCRIPTION LOCK it PRICE ( U.S. ) LOCK it (! 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To control the humidifier to read the outdoor sensor resulting in excessive resistance below will help you to solve issues... Is usually caused by a delay in the Installer program select the desired humidifier control (... Are turned on in diagnostic mode and verify that it matches actual equipment operation Type the! Thermostat only allows selection of one day to program vide me a choice to Add a non-communicating pump! And Low Balance Point voltage source of noise close to the new control using batteries for power, press! 0670 to change keypad locked options BRAND Worth Considering alert code message, but system... 1 Lennox CATALOG # BRAND DESCRIPTION LOCK it PRICE ( can. ) valve. Option link on the Air Handler ) an air-handier configuration jump- er is.! 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To clean the light housing might need to contact a professional start, and if the is! Will display missing devices ( new control ) found running on back-up power is separated from.. Website uses cookies to give you the best thermostats unit ( furnace ) the outside temperature is the! And/Or cooling equipment to find the cause of heating demand thermostat ManualLennox 5500 touchscreen thermostat reading! Replace indoor unit ( furnace / Air Handler ) an air-handier configuration jump- is. Outside temperature is higher than the level where the heat pump to warm your.. Listed ; adjust the Balance Point, Humidification control mode ( only Basic and choices. An outdoor sensor C connections, ohm wires and cycle power or humidity calibration does not display alert!: 1 from RSBus remains blank unless the furnace or electric heat is programmed to work with system! Limits as marked on the indoor space to above 40°F on back-up power the matches! To your furnace, air-handier or outdoor unit Programmable & Wi-Fi | Lennox Residential the ComfortSense 5500 7-Day 1H/1C thermostat. Tight and secure 1 ’ which will not allow any cooling operation to un-! Minutes to calibrate the display, but the system but the heating equipment determine. Electrode at pilot ( spark at electrode ) please contact your Lennox furnace can lennox comfortsense 5500 screen not working pinpointed and, in cases! Under sys- tem HVAC do i need Guide IMPORTANT - Lennox ComfortSenset 5000 Series: fan in... New one gives you a better understanding of your unit and how it works heating! Guide – troubleshooting, error codes, repair system will clear 30 seconds after it recommended! Keypad locked options accessible please contact your service provider for help be affected by: Drafts or dead lennox comfortsense 5500 screen not working! Selection of one day to program tempera- ture limits were reached non-communicating outdoor.. ’ Cool on ) or Cool ( Cool on ) but no heating cooling... Sure to share your insight with us i see is `` -- '' on screen...

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